Valve-gear for explosion-motors.



L.. RENAULT. VALVE GEAR POB. EXPLOSION MOTORS.

' A'PPLIUATION FILED iULY 1o, 1911.

Patented Mar. 4, 19u13.`

5 SHEETS-BHEET l.

' Invenor.

L. RENAULT.

VALVE GEAR FOR 'ELOSION MOTORS.

APPLICATION FLED JULY 1G, 1911.

Patented Mar. 4, 1913.

I wentar.

Patented Mar.`4, 1913.

L..RENAULTL VALVE GEAR FOB EXPLOSION MOTORS.

AYPLIOATIO YIIED JULY 10, 1911.

L. RENAULT. VALVE GEAR FOB. EXPLOSION MOTORS.

' APPLICATION FILED JULY 10, 1911. 1,054,714.

Amanned Mar. 4, 1.913K

5 SHEETS-EHEET 4.

v Witnes-ses.

L. RENAULT.

VALVE GEAR FOR EXPLOSION MOTORS. APPLICATION FILED JULYIlo, 1911.

5 SHEETS-SHEET 5.

Egg.

-exlim-st in succession,

y essi AvAsLAeLE ooeE 'e' we mf 1.* l? Lome liessen?? ena large @asf 'Y- im ille gases while fue seme lime flisibumg mezloeis eeet releuvely smell amplitude.'

consists in fren ing ime Wall oi' t :le valve which m u .I may nel; the enife cifeumL :ence of elle und which is provided at its upper willi [l forming e valve. This Telas whiz:- very large size Tests up@ e sent Wines Lonsiiuted by ille ii'opel" yo @staining e. Veiy ai' gases with e relatively smell valve, While #the seme surement enligne no inciease in the eyleile;

@tional orros she flewey of es Figure l-is e Veflieelseei ,in Wliieli the exhaust valve only is arranged in accorzmee 'with the* invention and '3 ae respeeiely e versie-el section ami plexi o e meier in which the admission Y l in. of the sectiee. eeothei ofm eff "the met@ in which itliesime slifle valve seufes for ille eclmissien a Specimen oe, e- .est-ees Patent.

Fase-ritmi Mar. 4,1913.

isili. smal whales.

renge, its upper' part 5 resting on theseat formed in thel eylincler. En this figure, oe slide valve l serves for lthe"exhaust. The" gases expelled ailier lie explesion esvsiehe?l direely imo like atmosphere' b into exheus eolleeoi anti Vtnefnee mto a silencer. The inlet valve 8 1s arranged at piston and' it may also be made offl'arge convenient manner for example 'as' represeied in Fig. by means of@ eem 9 mounted on the @am shaft 10 and actlng upon a.

lever l2 pi'voed' around a ixed point 13 end also plveted' to the inner part 'ofthe slide valve. -Tle lnlxet .valve 1s control-led e .nu u

or exempe my means of a rocker, a hft rod is ezcliaiily employed in certain vauferrnoble en-cl aefoplane metox's. in he amenagement eicle iii coss section and represented at emi l to; the ellmissien emi theoiher for the exl'isus; the corresponding eonuitsvl and i8 ere sluit ley par'i'ions 19. Cast with the eyliiflef The fewo slide valves i5 and' 16 are eeiirolle appropriate means; vfer exemole iw douloesysem of levers amilo o e e in l end which is El. Obvipnsly the "we sli and i6 might be m'adf in extent pxjoufed liet 'the eiremnfei'enee fixe@ peet Casi; lle oyiizen in lie me" einem illustrated m Figs. il,

:3, the le valve serves in succeslejleel; conduits and are mig fo? lle admission ef lle gV es die ether fel their exhaust sv v. m ,M112 ""L .9 'if bieb ele exime lea oy m 1aes -o ser; ies'geevely, 'llli'ese valves are ceni'eile.

menes- 'in snel;

meme n een; encuen will Valve 22 which is also eeere, e eem elle;

e @51de ef lle mese? ie. noe het the :smeeeape to lie exerior through the conduit 7 lle upper part 'oi' the cylinder above the.

size, The slie valve is eperate nany' rolle ll iiotmted at the extremity of dileA 12 end a second eem 9^ on shaft 10 such as.

illustrated in 2.' and 3 the single slide valve is replaced by, two slidev valves each presentmg'a.' seml-- 80 @ne ef these slide valves serves vsion e -lie admission alici foi* the eziheu's. Slirle' r elle eem l0 by any. epproprieefees then move:-

movemen ef slides or valves and 26 invariably experithe guidance and the lubrication.

In the foregoing arrangements the ex haust slide valve has been represented as resting normally upon a seat formed in the cylinder the opening movement taking place by lifting the slide valve above its seat.` In the devices illustrated 'in Figs. 6 and 7, the arrangement is inverted. The slide valve rests beneath its seat and the opening movement' takes place by depressing said valve. The cylinder 1 surrounded by a cooling jacket 2-Aiscast with the cylinder head. A. suction valve 8 ot; large diameter operated by any convenient means for example by means of a rocker is arranged at the upper part of the cylinder head. A cylindrical slide valve 4 is mounted inside the cylinder l between this cylinder and the piston 3, the

upper edge 5 of this slide valve being chamfered l:and converging 4in an pward direction. l IThis slide valve 4 rests upon a seat 6 presenting a chamfered surface directly in the same manner and which is machined inside the cylinder. An exhaust socket 7 com-j :of this vlever is pivoted t9 the slide valve a .'-ivhileits other extremity is connected with a spring 29 fixed to the gear case. A c am 9 carried by a shaft 10 controls the lever of the valve 4 by the intermediary of a roller 11- mounted on the lever l2. valve 8 is operated by means similar to those employed in the modification shown in Fig. l.

In Fig.- 7 a modified construction is shown in which the slide valve presents a restriction 28 connected with the main portion 4 by means of an.' annular horizontal shoulder 27. As in the preceding example the upper part of the restriction 28 presents a conical chamfer converging upward applied to a seat of the same form machined in the cylinder of the motor. The operation of the two .devicesv described above is characterized ainly by the instantaneous and direct dise arge of the gases toward the exhaust socket 7 which they lare able to reach without having to edect a'ny detour immediately after the distributing gear has moved the slide valve from its fseat. The slide valve 4 is firmly held to its seat either by means ot' the spring 29 in the case villustrated in 6, or in the case illustrated in Fig. 7 by the pressure prevailing inside the cylinder and which is exerted vigorously upon the annular shoulder 27 of the slide valve.

The advantages obtained by the construction shown in Figs, 6 and 7 are as ollowsz' The construction is facilitated. In the' ar- Admission notarilil rangements shown in Figs. 1, 2, 3, 4, 5, it is necessary to employ 'detachable 4cylinder headsto enable the slide valve to be arranged in place. In the improved arrangement as in Figs. 6 and 7 on the contrary, the cylinder and the cylinder head can be. formed in one piece, the slide valve being arranged in place through the lower part'of ,the cylinder. Furthermorethe improved arrangement enables the gases to escape direotly and instantaneously without effecting any detour at the moment of the exhaust period, thereby avoiding any resistance to the passage of the gases and consequently obtaining greater eiiiciency. n practice the` o exhaust is instantaneous. As shown in the drawing, the improved arrangement also permits of giving to 'the slide valve such a form that it is naturally applied to its seat by the pressure obtained inside the cylinder. The value of the force holding the valve to its seat is'variable in accordance with the diiierence between the diameter of the body of the slide valve and the diameter of its seat; itcan be reduced to zero as shown in Fig. 6. twill be understood that the operat-ing means may vary as desired as stated inthe rst part of the a plication. Finally, the improvement is a so applicable to the case of double slide valves extending over a portion of the circumference of the cylinder, oneof them servingfor the admis- -sion and the other for. the exhaust as shown in Figs. 2 and 3.

i The device illustrated igs. 6 and7 is applicable to cases'in which a single slide valve serves for the admission and for the exhaust according 'as communication is established with the inlet or exhaust by' means of auxiliary slidevalves when the principal slide valve is separated. from its seat as shown inl Fig. 5;

I claim:

1. An' explosion motor, comprising a cyl inder, a piston, admission and exhaust ports in said cylinder, a valve interposed between the piston and the cylinder and provided with a seating rim, a valve seat in the cylinder coperating with said seating 1 rim on the valve to control the exhaust port, and means'for actuating said Valve.

2. An explosion motor, comprising .a cylinder, a piston, admission and exhaust ports inder having an explosion chamber, and iny let and outlet ports in the walls thereof, a

piston in the cylinder, a valve interposed 'be` tween the piston and the cylinder, a second iso,

j val-ve interesed between the pistdn andth In testimony whreof I hav hegegnto et cylinder a veled seat formed on the ntemy hand in presence of `two subscnbmg wlt- Loms RENAULT.

nor o f t e cy1nder,'sad v'aves' havin b evmesses. `e1ed seatmg rims to coperate with sai bev- 5 eled seat to controLthe admpn-'and ex- Witn:

hast ports, and meanslfor actuating said, DLAN B. `MAsoN,

` valves. A vLotml Joasl;`

j Copie. of this patent may' be downed for an nenti auch, by kening un Uanninioner of hun,

. y Wnhington, D. O. 

